Door lock



March 13, 1951 c. A. HILLGREN 2,544,959

DOOR LOCK Filed Aug. 1, 1945 2 Sheets-Sheet l INVENTOR. C ne, 4. Hum/en)March 13, 1951 Q A 2,544,959

DOOR LOCK Filed Aug. 1, 1945 '2 Sheets-Sheet 2 INVENTOR.

Patented Mar. 13, 1951 UNITED STATES PATENT OFFlCE DOOR LOCK Carl A.Hillgren, Los Angeles, Calif.

Application August 1, 1945, Serial No. 608,160

4 Claims. 1'

My invention relates to locks; and particularly to operating spindlemechanism for such locks.

One of the principal objects of this invention is to provide a lockwhich consists essentially of three main units which are adaptedseparately to be installed in a door or other closure, and in which theseveral units are interlocked and readily secured together by a minimumof securing means at one or the inner side of the door, and in which theseveral units may be installed in the door or closure with a minimum offitting, so that the installation may be readily made with few tools orby unskilled persons, and whereby the lock may be secured in placeby;only a few screws.

Another important object of this invention is to provide a spindle meanswhereby the locking latch may be operated from both sides of the door orother closure, and whereby the operating means at both sides may belocked, and further whereby said latch may be operated from one side bya key.

An important feature of my lock is the provision of a latch operatingmeans in the form of interpositioned semi-circular portions of operatingspindles for engaging the'rear portion of the latch so that theoperation of either spindle will retract the latch.

A further important object of this invention is to provide novellyarranged spindles on the same axis, and in which one or a secondaryspindle has a latch operating portion located within a correspondingportion of the main spindle and rotatable with respect to the latter,and whereby the secondary spindle is held in position againstlongitudinal or axial movement by the axial securing of the main spindleagainst such longitudinal movement.

A still further important object of this invention is to provide a lockhaving novel and simple means in association with the inner knob of a'door for locking the inner and outer knobs or operating members of thelock against rotation or other operation, and. a simple and novel meansin connection therewith for separately operating the lock from theoutside of the door.

Another important object of this invention is to provide a novel andsimple cage which may be inserted from one side of the door, and whichmay be held in position by a knob or other operating means at theopposite side of the door, and in which such cage isutilized forsecuring the spindle or spindles in position, and also whereby thelocking latch or bolt is secured in position when the cage is insertedinto the door.

With these and other objects in view, as will appear hereinafter, I havedevised a lock having certain novel features of construction,combination, and arrangement of parts and portions, as will be hereafterdescribed in detail and particularly set forth in the appended claims,reference being had to the accompanying drawings, and to the charactersof reference thereon, whichform 7 a part of this application, in which:

Fig. 1 is a top view of my lock installed in a door, the door beingshown in section through the median portion of the lock;

Fig. 2'is a fragmentary longitudinalsectional view thereof, thesectional portion being taken through the horizontal plane passingthrough the median portion of the lock, portions of the lock and doorbeing shown fragmentarily to facilitate the illustration Fig. 3 is afragmentary sectional view thereof, taken through 3--3 of Fig. 2;

Fig. 4 is a sectional view thereof, taken through 4-4 of Fig. 1;

Fig. 5 is a sectional view thereof, taken through 55 of Fig. 2;

Fig. 6 is a sectional view thereof taken through 66 of Fig. 2; I

Fig. 7 is a sectional view thereof, taken through 1-! of Fig. 2; v

Fig. 8 is a. fragmentary side view thereof, taken at 8-8 of Fig. 6; and

Fig. 9 is a perspective exploded view showing the relative relation ofthe principal elements of my lock. j

My lock, for the purpose and convenience .of installing thev same in adoor, designated. D, is made in self-contained units A, B, and C. .Theunit A, which consists 'of a number of elements, as will be hereafterdescribed, is mounted at the outside of the door, while-the unit C ismounted on the inside of the door, and the unit By in the edge of thedoor. portion of the lock, is inserted into a drilled hole D in the edgeof the door, while the unit A is inserted through a transversely drilledhole D? located inwardly from the edge and intersecting the hole D Theportion of the unit A which is positioned within the drilled hole Dlocks the latch unit B at the inner portion thereof. The unit 0 issecured to the inner end of the unit A as will be hereafter described indetail, thus securing all elements of the lock in position.

The unit A contains the outer knob l or other operating member at theoutside of the door, while the knob 2, or second operating member, ispart of the unit C. Both knobs or operating The unit B, which is thelatch members are arranged separately to operate the latch bolt 3 of thelatch unit B.

The latch bolt 3 is enclosed in a cylindrical housing 4 which is ofsubstantially circular crosssection, except for slightly flattenedopposite sides, as shown best in Fig. 9, so that it may be easilyinserted into the drilled hole D The latch bolt 3 is reciprocallymounted in the outer portion of the housing, while at the inner'portionthereof is "reciprocally mounted the latch-bolt actuating member 5. Thebolt has a cut-out portion 3 at one side of its inner end, providing atthe other side a leg 93* which extends backwardly into a cut-out portion5 at one side of the actuating member. Thus the two members overlap eachother. Within the cut-out portion 3 is located a compression spring 6which normally operates the bolt and actuating member, forcing the boltoutwardly to its normal latching position. The forward extension 5opposite the cut-out portion 5 of the actuating member hasa'longitudinal slot 5 in which is located the hub of 'a'rocker I whichis pivoted on a pin 8 supported inthetopposite flatwalls of the housing.This rocker has "opposed "arms l and l the former extending into atransverse notch 5 in the portion forming the outer'side' of thelongitudinal slot 5, and "the latter extendin into atransverse notch 3in the backwardly pro- .jecting leg 3' of the bolt. As theactuatingmempert is forced outwardly, by rotating either of the knobs Iand 2, as will be hereafter described, 'the. shoulder formingthefinner'end of the'notch 'Siengages the short arm of the'rocker'andforces Lthe longer arm"? against "a correspondings'houl- .derform'ingthe inner end of the notch 3, withdrawing or retracting the bolt.

The spindle mechanism for operating the latch, that is, forretr'actingthe bolt, consists of a main spindle I I and a secondary orkey operated spindle'I'Z, 'theformer being non-rotatably connected toboth the outer and inner knobs. Both of these spindles extend axiallyinto acylindrical cage'IS, the spindle I I extending through thecage,while the spindle I2 is short of the innerend of thecage. The outerend of the spindle l I is axially held or axially located within the hub'or shank of the outer knob I by means of the secondary spindle I2 whichis connected to the inner end 'of a cylinder I4 against longitudinalmovement. The cylinder I4 is located coaxially "within the outer knobandiis non-rotatable andaxially fixed with respect-thereto. But thespindle I2 is rotatable with respect to the cylinder and the outer knob,as --will behereinafter described. The cylinder "I I is prevented fromrelative rotation with respect to the knob I by means of a keyportion'cohs'isting'o'f flattened oppositesides 14 of the cylinder which fitinto the correspondingly "shaped recess I' within the knob, 'as shown inFigs 2 and 3.

The outer end portion of the spindle II is :of semi-circularcross-section, asindica'ted by H and this portion "fits into acorrespondingly shaped "bore'or'recess I at the inner "end of the hub'or'shank 'ofithe .outer knob I. The outer end oflthesemi-circularportion I I of the spindle has asemi circular enlargementor shoulder I l which fits into a correspondingly'erflarged recess 'I'in the hub of the knob II, and is retained by a shoulder I At 'theflatside of the semi-circular portion II of the spindle II are axiallyarranged semi circular recesses G I and t i in which are located,respectively, a latch operating portion I-Z ofsemi-circular-'cross=section, and a 4 round shank I2, the latter beingof smaller diameter than the semi-circular latch operating portion I2 Atthe inner end of the latter portion is a head I2 of the same diameter asthe portion I2 to facilitate axial location of the spindle I2 bothwithin the semi-circular recess II of the spindle II and within asemi-circular bore I at the inner end of the hub of the knob I, the boreI being located diametrically opposite the semi-circular bore I Theouter end of the spindle I2 is connected, preferably pivotally and :bymeans of a screw I5, to the inner end of a cylindrical plug 15, which isthe key receiving member, and is rotatably mounted within and .coaxiallywith respect to the cylinder I4. Within this plug I6 and the cylinder Inare located the usual tumbler pins I! for locking the plug innon-rotatable relation with respect to the cylinder and also forreleasing the same by a key to permit rotation of the plug.

Intermediate the ends of the spindle II, and specificallyat the innerend of the semi-circular portion II is provided a semi-circular groove Hinto which-fits a plate I 8. This plate is of U-shape, corresponding tothe cross-section of the cage I3. It has an opening I8 through which thespindle II extends. This opening has a semi-circular inner end 18 whichfits into the II in position. This plate i8 is secured to the end-0f thecage I3 by screws I9.

In mounting the spindles within the outer =knob I and in the cage I3,the portions 12 and I2 of the key operated-spindle I2 are inserted intothe recesses II and H respectively, "of the outer spindle, as indicatedby dotted lines of the main spindle II in Fig. 9, and this unit,together with the cylinder I4 is inserted axially into the knob I fromthe outer end, the semi-circular portion II fitting into thecorrespondingly shaped bore I in the knob I. The spindles, assembled inthe knob I, are inserted axially within the outer end of the cage I3 butat from their normal position. When the spindles are inserted to theirfull extent, the spindles are rotated by means of the knob I, permittingthe inner end I8 of the plate I8 to enter the groove H thus locking theseveral members against axial movement with respect to each other. Whenthus inserted, the inner end portion-I of the hub of the knob extendsinto and is rotatable within a circular recess I3 in an escutcheon plateIt which forms a flange at the outer end of the cage.

The escutcheon plate I3 "is adapted to be placed against the outside ofthe door to cover the drill hole D 'into which the cage 13 extends.

The cage has an opening I 3 at its cylindrically outer side, and at theopposite sides or edges 'ofthe opening are provided ledges I3 which areadapted to fit into transverse grooves or notches -4 at the upper andlower sides of the inner'end portion of the housing 4 of the latch unit,as shown best in Figs. 6 and 9. In order to install the lock, the'latchunit B is first inserted, then the unit A is installed by inserting theinner end of the cage I3 into the hole D and forcing the ledges Iii intotransverse grooves or notches 4 of the housing 4, thus securing thelatch unit in position.

The inner knob 2 which forms part of the knob unit C isrotatably'mounted at the inner end of its hub portion in an insideescutcheon plate ZI, the hub of the knob being shown as rotatablyretained therein by a ring 22. The plate 2| is retained in position'andwith respect to the remaining portions of the look by screws 23 whichare screwed from the outer side of the plate 2! into the open end of thecage 13 through holes [8 in the plate l8. These screws 23 draw both ofthe escutcheon plates together against the opposite side of the door,through the cage i3 which anchors the inner end of the semi-circularportion of the spindle H to the plate is carried by the cage.

The inner end of the spindle II has a reduced axial extension H which isshown as of square cross-section. This portion H extends into an axialopening 2*, of square cross-section, in the knob 2. The end of thesquare portion H extending beyond the hub of the knob 2, is secured tothe end of the semi-circular portion I l but beyond the recess I l.

The latch bolt 3 may be retracted freely by rotating either knob ineither direction. Both of the knobs may be locked against rotation forpreventing retraction of the latch bolt 3 by a small latch 26 which isreciprocally mounted in a radial direction at the inner side of theouter escutcheon plate l3 supported by the cage 13. The inner end ofthis latch 26, designated 25 in Fig. '7, is adapted to enter alignedrecesses l near the inner end of the hub of the outer knob i and arecess II in the semi-circular section 1 l of the spindle H. The latch26 is moved or operated by a rock shaft 21 rotatably mounted on an axisparallel to the axis of the spindles and located in a longitudinalrecess in the back wall of the cage I3. This shaft is reduced at itsopposite ends and extends into openings in a retainer 28 and in theplate 18, in which the shaft is rotatably supported. The retainer islocated at the inner side of the escutcheon plate 13 by dowels on theretainer which extend into spaced holes I3 as shown in Fig. 7. At theinner end of the rock shaft 2! is a crank pin 2'! which extends into anangular slot 26 in the latch 26, as shown in Fig. '7. In the outer endof the rock shaft 21 extends axially an operating safety key 29, thiskey having a polygonal portion 29* at its inner end which extendsloosely into the rock shaft. This key is provided at its outer end witha handle portion 2i! for rotating the key. This key is rotatably mountedintermediate its ends in the escutcheon plate 2| so that it is carriedby and removed with the escutcheon plate. By shifting of the handleportion 29 from the dotted to the solid line position as shown in Fig.4, the latch 26 is forced inwardly. At the outer end of the cage !3 andinwardly from the plate is is a leaf spring 39 which holds the rockshaft 2'! in either of its rocked positions for resiliently holding thesame in a locking or unlocked position.

When desiring to lock knobs against rotation, the handle portion 29 ofthe ke 29 is shifted from the dotted to the solid line position, asstated above. In order to retract the latch bolt 3 from the outside ofthe door, a key 3% is inserted in the plug it in order to rotate theplug, and thereby to rotate the secondary or key operated spindle l2.Thus the actuating member 5 of the latch unit B is forced outwardly, andthe latch bolt 3 retracted.

Though I have shown and described a particular construction,combination, and arrangement of parts and portions, I do not wish to belimited to the same, but desire to include in the scope of my inventionthe construction, combination, and arrangement, substantially as setforth in the appended claims.

with a portion of semi-circular cross-section non-rotatably connected atone end coaxially to the inner knob, and provided at the end ad- 'acentthe inner knob with an arcuate groove about the axis of the spindle, a'retaining plate secured relative to and between two knobs and l 7provided with a semi-circular opening adapted to receive. the spindle atthe arcuate groove thereof for axially locating the spindle, there beingprovided in the plane face of the semicircular cross-section of saidspindle concentric semi-circularrecesses positioned end to end, one atthe outer" end of the spindle and the other inwardly thereof, the latterbeing of greater diameter, and a key-operated spindle located coaxiallywithin the outer knob and coaxially with and rotatable relative to thefirst spindle, the key-operated spindle having a latch operating portionlocated within the larger recess of the first spindle, and also having aconnecting shank connecting the latch operating portion with the outerknob, the shank being located within the smaller recess, the latchoperating portion of the key-operated spindle being also ofsemi-circular cross-section with the face thereof located normallysubstantially within the plane of the corresponding face of the firstspindle.

2. In a lock structure, an outer knob, an inner knob, a spindle providedintermediate its ends with a portion of semi-circular cross-sectionnon-rotatably connected at one end coaxially to the inner knob, andprovided at the end adjacent the inner knob with an arcuate groove aboutthe axis of the spindle, a retaining plate secured relative to andbetween two knobs and provided with a semi-circular opening adapted toreceive the spindle at the arcuate groove thereof for'axially locatingthe spindle, there being provided'in the plane face of the semi-circu arcross-section of said spindle concentric semi-circu ar recessespositioned end to end, one at the outer end of the spindle and the otherinwardly thereof, the latter being of greater diameter, a ke -operatedspindle located coaxially within the outer knob and coaxially with androtatable relative to the first spindle, the key-operated spindle havinga latch operating portion located within the larger recess of the firstspindle, and also having a connecting shank connecting the latchoperating portion with the outer knob, the shank being located withinthe smaller recess, the latch operating portion of the key-operatedspindle being also of semi-circular cross-section with the face thereoflocated normally substantially within the plane of the correspondingface of the first spindle, a latch rock shaft rotatably mounted at oneend in the plate on an axis parallel to the axes of the spindles, alatch connected to the other end of the rock shaft for locking the firstspindle and the outer knob against rotation, and a latch lever at oneside of the inner knob detachably and non-rotatably connected to theinner end of the rock shaft.

3. In a lock structure, a cage adapted to be fitted in a door. an outerknob rotatably mounted thereon and extending from the outer sidethereof, a retaining plate secured to the inner side of the cage, anescutche on plate secured to the inner side of the cage beyond theretaining plate,

7 an inner knob rotatably mounted on the "es- 'cutcheon plate andextending therefrom, a Spindle rotatably mounted within the cage andnon-rotatably connected with both knobs, said spindle being providedwithin the cage with a portion of semi-circular cross-section and at theportion adjacent the inner knob with an arcuate groove about the axis ofthe spindle, said retaining plate having a semi-circular opening forreceiving the spindle at the arcuate groove thereof for axially locatingthe spindle, there being provided in the plane face of the semicircularcross-section of said spindle concentric semi-circular recessespositioned end to end, one at the outer end of the spindle and the otherinwardly thereof, the latter being of greater diameter, and akey-operated spindle located coaxially within the outer knob andcoaxially with and rotatable relative to the first spindle, thekey-operated spindle having a latch operating portion located within thelarger recess of the first spindle, and also having a connecting shankconnecting the latch operating portion with the outer knob, the shankbeing located within the smaller recess, the latch operating portion ofthekey-operated spindle being also of semi-circular cross-section withthe face thereof located normally substantially within the plane of thecorresponding face of the first spindle.

4. In a lock structure, a cage adapted to be fitted in a door, an outerknob rotatably mounted thereon and extending from the outer sidethereof, a retaining plate secured to the inner side of the cage, anescutcheon plate secured to the inner side of the cage beyond theretaining plate, an inner knob rotatably mounted on the escutcheon plateand extending therefrom, a spindle rotatably mounted within the cage andnon-rotatably connected with both knobs, said spindle being providedwithin the cage with a portion of semi-circular cross-section and at theportion adjacent the inner knob with an arcuate groove about the axis ofthe spindle, said retaining plate having a semi-circular opening for.receiving the spindle at the arcuate groove thereof for axiallylocating the spindle, there being provided in the plane face of thesemicircular cross-section of said spindle concentric semi-circularrecesses positioned end to end, one at the outer end of the spindle andthe other inwardly thereof, the latter being of greater diameter, akey-operated spindle located coaxially within the outer knob andcoaxially with and rotatable relative to the first spindle, thekey-operated spindle having a latch operating portion located within thelarger recess of the first spindle, and also having a connecting shankconnecting the latch operating portion with the outer knob, the shankbeing located within the smaller recess, the latch operating portion ofthe key-operated spindle being also of semicircular cross-section withthe face thereof located normally substantially within the plane of thecorresponding face of the first spindle, a latch rock shaft having oneend rotatably mounted on one end of the cage and the other end rotatablymounted in the retaining plate, the axis of the rock shaft beingparallel to the axes of the spindles, a latch connected to the first endof the rock shaft for locking the first spindle and the outer knobagainst rotation, and a latch lever at one side of the inner knobnonrotatably connected to the other end of the rock shaft.

CARL A. HILLGREN.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 631,433 Phelps Aug. 22, 1899847,884 Belknap et al Mar. 19, 1907 1,040,966 Voight Oct. 8, 19121,550,565 Niessen Aug. 18, 1925 1,796,727 Schlage Mar. 17, 19311,829,815 Schlage Nov. 3, 1931 1,845,197 Schlage Feb. 16, 1932 1,880,675Baume Oct. 4, 1932 2,357,551 Schlage Sept. 5, 1944

